AS 1038.8.2-1996

1 - AS 1038.8.2-1996 COAL AND COKE - ANALYSIS AND TESTING - COAL AND COKE -CHLORINE - HIGH-TEMPERATURE COMBUSTION METHOD
4 - PREFACE
5 - CONTENTS
6 - 1 SCOPE
6 - 2 REFERENCED DOCUMENTS
6 - 3 PRINCIPLE
6 - 4 DEFINITIONS
6 - 5 SAFETY
7 - 6 REAGENTS
7 - 6.1 General
7 - 6.2 Aluminium oxide
7 - 6.3 Desiccant
7 - 6.4 Sodium tetraborate solution (0.025 mol/ L)
7 - 6.5 Standard sulfuric acid solution (0.0125 mol/ L)
7 - 6.6 Hydrogen peroxide solution (9 g/ L)
7 - 6.7 Mercury (II) oxycyanide solution
7 - 6.8 Screened indicator solution
7 - 6.9 Oxygen
7 - 7 APPARATUS
7 - 7.1 Purification train
7 - 7.2 Heating unit
7 - 7.3 Combustion tube
7 - 7.4 Combustion boat
8 - 7.5 Silica pusher
8 - 7.6 Nickel-chromium wire
8 - 7.7 Flowmeter
8 - 7.8 Pressure gauge
8 - 7.9 Silica adaptor
8 - 7.10 Absorption vessel
8 - 7.11 Heat-resistant stopper
8 - 7.12 Pressure regulator
8 - 7.13 Vacuum pump
9 - 8 SAMPLE
9 - 8.1 General
9 - 8.2 Equilibration
9 - 9 PROCEDURE
9 - 9.1 Preparation of apparatus
9 - 9.2 Determination of the blank
9 - 9.3 Combustion and absorption
10 - 9.4 Measurement
10 - 10 CALCULATION
11 - 11 REPORTING OF RESULT
11 - 12 PRECISION
11 - 13 TEST REPORT

Sets out a high-temperature combustion titrimetric procedure for the determination of the chlorine content of coal and coke.

This Standard sets out a method for the liberation of the chlorine from coal and coke by high-temperature combustion, and its subsequent determination by titrimetry.NOTE: The presence of residual halogen-bearing organic float-and-sink liquids in coal samples will affect the determination of chlorine.This Standard is applicable to coal and coke containing less than 0.3% chlorine.

First published as part of AS K152.8-1965 (endorsement of BS 1016.8-1959 without amendment).
AS K152.8-1965 withdrawn 1978.
AS K152.8-1965 revised and redesignated AS 1038.8-1980.
Revised and redesignated in part as AS 1038.8.2-1996.